Curving-machine for sheet material.



C. N. FREY.

GURVING MACHINE FOR SHEET MATERIAL.

urLIouron FILED JULY e, 190e.

938,751. Patented Nv.2,1909.

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APPLIUATION FILED JULY 6 1908 /lfffzygssg- M@ M C. N. PRBY.

GURVING MAGHINE FOB SHEET MATERIAL.

APPLIUATIOH FILED JULY 8', 1908.

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CLARENCE N. FREY, OF CINCINNATI, OHIO, ASSIGNOR TO THE J. M. ROBINSON MANU- FACTURING COMPANY, OF CINCINNATI, OHIO, A CORPORATION 0F OHIO.

Guaviare-MACHINE Eon SHEET MATERIAL.

Specication of Letters Patent.

Patented Nov. 2, 1909.

- Application led July 6, 1908. Serial No. 442,163.

To all whom it may concern:

Be it known that I, CLARENCE N. FREY, a

citizen of the United States, residing at Cin.

cinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Curving-Machines for Sheet Material, of which the following is a specification.

It is the object of my invention to provide new and useful improvements in machines for curving sheet material, the improvements embracing new and improved means for mounting and adjusting the rollers, and it is the fur-ther object of my invention to so mount the upper roller as to permit the same to be tilted in convenient manner for the purpose of inserting or taking olf work and enabling the work to be readily slipped over the end of the roller.

The invention consists in providing a curving machine for curving sheet material with an upper roller arranged to swing from one end thereof to permit `the insertion or removal of the Work over the other end of the roller; in novel meanskof mounting and manipulating the rollers; and, further, in the parts, and `in the construction, arrangement and combinations of parts hereinafter more fully described and claimed.

In the drawings: Figure 1 is a front elevation of my improved device. Fig. 2 is a head-end elevation of the same. Fig. 3 is a tail-end elevation of the same. Fig. 4 is a front elevation of my improved device, partly broken away, and partly in vertical i longitudinal section on the line a-a of Fig.

2, showing the upper roll swung into releasing position. Fig. 5 is a vertical crosssection of my improved device on the line y-y of Fig. 1. Fig. 6 is a detail in horizontal section on the line -m of Fig. 1

gear. Fig. 7 is a detail in vertical section on the line w of Fig. 3, showing the locking in manner to be hereinafter described, these nular grooves 2a 3a 4a between which are annular beads 2b 3b 4", forming what I shall hereinafter term corrugated rollers, the annular beads 2b registering with the annular grooves 3a 4a and the annular grooves 2a registering with the annular beads 3b 4b.

5 is a driving-shaft, driven in suitable manner, and shown journaled in bearings 6 in the main fra-nie, in a bearing 7 of a bracket 8 secured to the main frame, and in a bearing 9 of a standard 10. A pulley 11 is shown on the driving-shaft, which also carries a pinion 12 meshing with a gear 13 on an intermediate shaft 14j ournaled in ay bearying 15 on the bracket 8 and a bearing 16 in the main frame, the intermediate shaft also carrying a pinion 17 meshing with a gear 18 mounted on the rollersshaft 19 ofthe roller 3, and forming gearing for driving said shaft 19. The roller-shaft 19 is journaled in slide-blocks 2l slidable in slide-ways 22 of the main frame and adjustable up and down by means of having screw-rods 23 journaled in the lower ends of said slide-blocks, as shown at 24, and threaded into internally threaded bearings of the main frame. There is one of these slide-blocks with adjusting means therefor at each end of the roller 3 and theyl are preferably adjusted in unison. For accomplishing this I mount a sprocket-wheel 26 on each of these screwrods, a sprocket-chain 27 being received about these sprocket-wheels, they sprocketu'heels being fast on said screw-rods. One of the screw-rods may also be provided with a hand-wheel 28 for turning the same. The rollers 2 3 may be termed the feeding rollers, the adjustment between them accommodating different thicknesses of material, whereas showing the shifting means for the slidable the roller 4 may be termed the bending 'l of curvature im arted to the stock.

means for the separable bearing. Fig. 8 is f a detail in irregular section on the line -v-v of Fig. 1' showing the manner of pivoting the upper roll and connecting the shaft for the lower roll with its operating gear; and, Fig. 9 is a detail in section on thefline u of Fi 3 showing the manner of mounting and riving the adjusting screw for the bending roller.

1 represents the main frame of the machine in which rollers 2 3 and 4 are mounted T e rollershaft 19 a so has a gear 30 thereon which is splined thereto and slidable length- `wise thereon. for purposes hereinafter described;r Thus 31 is a spline between the g gear 30 and the shaft 19. The hub 32 of this gear is' provided with an annular groove 33 into which pins 34 on a fork 35 are received. The fork is mounted on a lever 36 pivoted on the bracket 8 on a bolt 37, the lever having a handle 38 for its manipulation.

The gear 30 normally meshes with a gear 39 secured to the roller-shaft 40 of the roller 2, the roller-shaft 40 being journaled in a bearing 41 adjacent its gear end,which bearing is preferably capable of swinging as on pivot-bolts 42 threaded into the main frame and ,received into sockets 43 in said bearing, jam-nuts 44 holding the ivot-bolts in adjusted positions. At its ot er end the rollershaft 40 is journaled in a bearing 45. This thereof and to the journal of the shaft. v

Means are provided at the gear-end of this shaft for tipping the other-end of the roller 2 away from its mate to permit the insertion or removal of work. For accomplish' ing this tipping I have shown the gear-end of the shaft 40 provided with a collar 52 loose thereon and held thereon by a collar 53 secured to said shaft. The collar 52 is pro'- vi'ded with pins 54. Links 55 have eyes 56 received about said pins. These links are at the respective sides of the collar 52 and are articulated with an arm 57, the respective links being shown received at the respective sides of said arm by bolts 58 with which the links are articulated by eyes 59. This arm is shown in the form of a segment-gear journaled on astud 57 the teeth whereo are meshed by segment-gear 61 on a lever-- arm 62 pivoted on a stud 63 of the frame. .f

- The roller 2 is normally parallel with the i roller 3. If it is desired to tip the roller 2,V

the swinging-block 46 of the bearing 45 is released for releasing the journal at the tailend of said roller. The lever 36 isV also swung on its pivot for shifting the gear 30 sidewardly out of mesh and range of the gear 39 so as to permit the swinging of the roller-shaft 40 upon its pivot; The leverarm 62 is raised, which causes the arm 57 to be depressed, thereby depressing the geared end of said swinging roller-shaft-through the medium of the links 55 and collar 52 for tipping the swinging roller upwardly away from its mate for providing an opening laterally of its tail-end so that work may be inserted or removed conveniently. This swinging of the swinging roller is provided primarily for removal of the work, as this work is usually bent ,into curved4 form by my iinproved device, and is often caused to encircle the swinging roller in the bending thereof, the swinging of the roller and the freedom of its end permitting the removal of the curved work `to be conveniently accomplished. For holding the swinging roller in slanting position, the lever-arm 62 is ie-l ceived by a catch 64 pivoted on a bolt 65 on the bracket 8, this-catch being released from the lever-arm when it is desired to again bring the rollers into parallel positions. The roller 4 is on a shaft 66 j ournaled in slideblocks 68 slidable in slide-ways 69 of the main frame.

70 is a gear on the shaft 66 and 71 is a gear onthe shaft of roller 3, between which gears there is .an intermediate gear 7 2-held in mesh with said gears 7 0 71 by .expansion links 73. For adjusting said roller 4 each of the slideblocks 68 referably has an adjusting screw 74 journa ed therein, as shown at 67 and threaded through an internally threaded bearing 75 and received by a bevel-gear 76, the adjusting screw having splined connection 77 with said bevel-gear for causing' turning of the adjusting screw with the bevelgear, but permittin the adjusting screw to slide lengthwise t erein. A shaft 78, journaled in bearings 79 -on brackets 80 has bevel-gears 81 thereon which mesh with the respective bevel-gears 76. AA s ur-gear 82 is also shown mounted on the sha t 78 and is meshed by a gear 83 on a shaft 84 journaled in a bearing 85 of a bracket 86 secured to the frame. The shaft 84 is arranged to be turned by a hand-wheel 87, this construction permitting ready and convenient adjustment of the roller 4.

QM improved device is especially applicable or bending corrugated work into round, so-called ogee, and other curved forms, and

Aisf-very owerful and capable of performing eig-"treme y heavy duty, and is convenient in manipulation and adjustment, and the insertionand .removal of work accomplishedY without disturbing previous adjustment of Itlieir'c'ills. The corrugated stock adapted to ion' benurved by my improved device is received be'tweenthe rollers 2 3, the roller 4 having been adjusted to proper position with relatioii to the rollers 2 3 for imparting the proper curve to the stock. The corru ated sheets areifounded or bent into curved orni, the corrugations being received between the annular grooves and beads of the corrugated rollers 2 3 4.

My improved device is especially useful in curving corrugated sheet metal into round form for the pur ose of use as pipes, culvert drains and' simi ar work, the corrugated sheet metal being bent about the Swingin roller 2, this roller having its swinging end released and the curved work slipped endwise therefromwhen the bending operation has been com leted. My improved device is also applica le for bending reinforcing metal sheetsvsfor sea-walls and abutments, cement retaining arches for fire-proof buildings, and the like.

Having thus fully described my invention whatl I claim as new and desire to secure by Itters I atent is:

1. In a curvin rialthe combination of feeding rollers having mating annular grooves and beads normally located at the points of closest approach between said rollers in common planes parallel with the rotary axes of said rollers, meshing gearing between said rollers for drivin one of said vrollers from the other of said rollers, means for slipping one of the gears `of said earing between )said rollers endwise with ration to said collective rollers out'of mesh with its mate, and means for tiltin one of said rollers from its eared end, an constructed and arranged or moving-said movable gear endwise out of range of its mate for permitting the tilting of said tilting roller dlrectly from its operative position, for the purpose specified.

2. In .a curvin machine for sheet material the combination of mating feeding rollers, shafts therefor, gearing for driving one of said shafts, mating gears on said shafts for driving the other of said shafts, said first-named gearing and mating gears being spaced apart endwise at one end of said roll-` ers, link-mechanism extending between said first-named gearing and .matln gears and having connection with one of said shafts for tilting the roller thereon; and one of said mating gears being slidable endwise on its shaft during maintenance of longitudinal position of\the roller on said shaft for positioning the said gear out of lateral range of its mating gear durin tilting of said roller, substantially as descri ed.

3. In a curving machine for sheet material, the combination of a pair of feeding rollers, shafts therefor having axial extensions at one end of said rollers, gears mounted on said extensions, one of sald gears havmachine for Asheet mate-- ing spline-connection with its iextensionl for permitting the same to be moved endwise out of tilting ran e of itsmating gear during maintenance o4 longitudinal'posltion of said extension', a 'pivoted bearing in which the other of said shafts-is journaled, and linkmechanism having connection with said ex` tension of said last-named shaft forL permit.- ting tilting of said shaft and the roller .thereon upon endwise movementof'saidendwise movable gear 4out of tilting ran e of its mating gear, substantially as-descrl d. v

4:. In Aa curving machine for sheet material, the combination of up er and lower mating feeding rollers, sha ts therefor, 'a

pivoted bearing and al multiart bearing for y the shaft of said upper-ro er,A saidmultipart bearing comprlslnga swinging block and seourin means therefor, mating gears for said sha s, the pivotal axis of said pivoted bearingv being between said matin gears and said rollers, the gear for said sha t of said lower roller' being-slidable endwise away from said roller out of range of the said gear for said shaft of said upper roller, and link-mechanism having connection with said shaft of said upper roller for tilting said upper roller upon said pivoted bearing and thereby swinging the-gear thereon past said endwise movable .ear when lin shifted position, said link-mec anism comprising a segment-gear, a link articulated therewith segment-geanand a. lever-arm for said second segment-gear, substantially as described.

In testimony whereof, I have-signed my name hereto in the presence of two subscrib- 'ing witnesses.

and withsaid tilting shaft, a second segment-gear meshing Vwith said f'lrst-nar'ied 

